Birkenstock Arizona Essentials EVA Size 5 (36) Anatomically shaped BIRKENSTOCK footbed made from EVA Upper/footbed lining/sole: one piece molded EVA Details: two straps, each with an individually adjustable pin buckle; waterproof, washable, ultra lightweight Made in Germany. Material Upper: EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with very good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned. Insole: EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with very good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned. Footbed material: EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with very good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned. Outsole: EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with extremely good cushioning. As a result, it smooths out slight irregularities in the floor and ensures that every step is softly cushioned.